NTLM hash exposure via unsanitized UNC workspace name
Published Jul 20, 2026 · Updated Jul 20, 2026
Path traversal in Scille Parsec before 3.3.3-rc.0 allows remote authenticated users to expose NTLM hashes via a UNC workspace name. The Windows mountpoint code accepts backslashes in a shared workspace name and passes the resulting UNC path to the filesystem without neutralization. Exploitation requires creating and sharing the workspace within an organization; the target client mounts it automatically, contacting an available share or becoming unresponsive when the resource is unavailable.
Summary
What happened
Path traversal in Scille Parsec before 3.3.3-rc.0 allows remote authenticated users to expose NTLM hashes via a UNC workspace name. The Windows mountpoint code accepts backslashes in a shared workspace name and passes the resulting UNC path to the filesystem without neutralization. Exploitation requires creating and sharing the workspace within an organization; the target client mounts it automatically, contacting an available share or becoming unresponsive when the resource is unavailable.
The record
- CVE
- CVE-2026-25039
- Published
- Jul 20, 2026
- Updated
- Jul 20, 2026
- Vendor
- Scille
- Product
- Parsec
- Classifications
- CWE-40, T1187
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 20, 2026CVE publishedPublication date reported by the CVE source.
- Jul 20, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 3.3.3-rc.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Vendor advisory proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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